<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

      <!-- 卡片视图区域 -->
      <el-card>
        <el-row :gutter="20">
            <!-- 搜索与添加区域 -->
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
        </el-row>

        <!-- 用户列表区域 -->
        <el-table :data="userlist" border stripe>
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态">
                <!-- 作用域插槽 -->
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="180px">
                <template slot-scope="scope">
                    <!-- 修改 -->
                    <el-button type="primary" icon="el-icon-edit" size="mini" 
                    @click="showEditDialog(scope.row.id)"></el-button>
                    <!-- 删除 -->
                    <el-button type="danger" icon="el-icon-delete" size="mini"
                    @click="removeUserById(scope.row.id)"></el-button>
                    <!-- 分配角色 -->
                    <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                        <el-button type="warning" icon="el-icon-setting" size="mini"
                        @click="setRole(scope.row)"></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页区域 -->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>

        <!-- 添加用户的对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClosed">
            <!-- 内容主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" class="demo-ruleForm">
                <el-form-item label="用户名" prop="username">
                  <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                  <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                  <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                  <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                  <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱">
                  <el-input v-model="editForm.email" prop="email"></el-input>
                </el-form-item>
                <el-form-item label="手机">
                  <el-input v-model="editForm.mobile" prop="mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
        
        <!-- 分配角色的对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%"
            @close="setRoleDialogClosed">
            <p>当前的用户：{{userInfo.username}}</p>
            <p>当前的角色：{{userInfo.role_name}}</p>
            <p>分配新角色：
                <el-select v-model="selectedRoleId" placeholder="请选择">
                    <el-option
                      v-for="item in rolesList"
                      :key="item.id"
                      :label="item.roleName"
                      :value="item.id">
                    </el-option>
                  </el-select>
            </p>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>


      </el-card>
  </div>
</template>

<script>
export default {
    data() {
        // 验证邮箱规则
        var checkEmail = (rules,value,cb) =>{
            // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if(regEmail.test(value)) {
                // 合法的邮箱
                return cb()
            }

            cb(new Error('请输入合法的邮箱'))
        }
        // 验证手机号规则
        var checkMobile = (rules,value,cb) =>{
            // 验证手机号的正则表达式
            const regMobile = /^(0\|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if(regMobile.test(value)) {
                return cb()
            }
            
            cb(new Error('请输入合法的手机号'))
        }
        return {
            // 获取用户列表参数对象
            queryInfo:{
                query: '',
                // 当前页数
                pagenum: 1,
                pagesize: 2
            },
            userlist: [],
            total: 0,
            // 控制对话框的显示与隐藏
            addDialogVisible: false,
            // 添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile:''
            },
            // 添加用户的验证规则对象
            addFormRules: {
                username: [
                    { required: true ,message: '请输入用户名' ,trigger: 'blur'},
                    { min: 3, max: 10, message:'用户名的长度在3-10个字符之间' ,trigger: 'blur'}
                ],
                password: [
                    { required: true ,message: '请输入密码' ,trigger: 'blur'},
                    { min: 6, max: 15, message:'密码的长度在6-15个字符之间' ,trigger: 'blur'}
                ],
                email: [
                    { required: true ,message: '请输入邮箱' ,trigger: 'blur'},
                    // 调用自定义验证邮箱规则
                    { validator: checkEmail,trigger: 'blur'}
                ],
                mobile: [
                    { required: true ,message: '请输入电话' ,trigger: 'blur'},
                    // 调用自定义验证电话规则
                    { validator: checkMobile,trigger: 'blur'}
                ]
            },
            // 控制修改用户的对话框的显示与隐藏
            editDialogVisible: false,
            // 查询用户信息
            editForm:{},
            // 修改表单的验证规则对象
            editFormRules:{
                email:[
                    { required: true ,message: '请输入用户的邮箱' ,trigger: 'blur' },
                    { validator:checkEmail,trigger:'blur' }
                ],
                mobile:[
                    { required: true ,message: '请输入用户的手机' ,trigger: 'blur' },
                    { validator:checkMobile,trigger:'blur' }
                ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: {},
            // 所有角色的列表
            rolesList: [],
            // 已选中的角色id值
            selectedRoleId: ''
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
           const{ data: res } = await this.$http.get('users',{params: this.queryInfo})
           if(res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
           this.userlist = res.data.users
           this.total = res.data.total
           console.log(res);
        },
        // 监听 pagesize 改变的事件
        handleSizeChange(newSize) {
            // console.log(newSize);
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听页码值改变的事件
        handleCurrentChange(newPage) {
            // console.log(newPage);
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听 switch 开关状态的改变
        async userStateChanged(userinfo) {
           const {data:res} =  await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
           if(res.meta.status !== 200){
            userinfo.mg_state = !userinfo.mg_state
            return this.$message.error('更新用户状态失败')
            } 
            this.$message.success('更新用户状态成功')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮实现表单预验证
        addUser(){
            this.$refs.addFormRef.validate(async valid => {
                if(!valid) return 
                // 可以发起添加用户的网络请求
                const {data:res} = await this.$http.post('users',this.addForm)
                if(res.meta.status !== 201) return this.$message.error('添加用户失败')
                this.$message.success('添加用户成功')
                // 隐藏添加用户列表
                this.addDialogVisible = false
                // 重新获取列表
                this.getUserList()
            })
        },
        // 展示编辑用户的对话框
        async showEditDialog(id) {
            this.editDialogVisible = true
            const {data:res} = await this.$http.get('users/'+ id)
            if(res.meta.status !== 200) return this.$message.error('查询用户失败!')
            this.editForm = res.data
            this.editDialogVisible = true
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                if(!valid) return
                // 发起修改用户信息请求
                const {data:res} = await this.$http.put('users/' + this.editForm.id,{
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                })
                if(res.meta.status !== 200) return this.$message.error('更新用户信息失败')     
                // 关闭对话框
                this.editDialogVisible = false
                // 刷新用户列表
                this.getUserList()
                // 提示用户更新成功
                this.$message.success('更新用户信息成功')
            })
        },
        // 根据Id删除对应的用户信息
        async removeUserById(id) {
            // 弹框询问是否删除
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            // 如果用户确认删除则返回confirm字符串
            // 如果用户取消了删除则返回值是cancel字符串
            // console.log(confirmResult);
            if(confirmResult !== 'confirm') return this.$message.info('已经取消删除')
            const {data:res} = await this.$http.delete('users/' + id)
            if(res.meta.status !== 200) return this.$message.error('删除失败')
            this.$message.success('删除成功')
            this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo) {
            this.userInfo = userInfo

            // 在展示对话框之前获取所有的角色列表
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
            this.rolesList = res.data


            this.setRoleDialogVisible = true
        },
        // 点击按钮分配角色
        async saveRoleInfo() {
            if(!this.selectedRoleId) {
                return this.$message.error('请选择需要分配的角色!')
            }
            const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,
            {rid: this.selectedRoleId})

            if(res.meta.status !== 200) return this.$message.error('更新角色失败！')

            this.$message.success('更新角色成功！')
            this.getUserList()

            this.setRoleDialogVisible = false
        },
        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed() {
            this.selectedRoleId = ''
            this.userInfo = {}
        }

    }
}
</script>

<style lang="less" scoped>


</style>